[support] Can't login into site

I hope someone can help me with this problem because I am not sure where to look and if its a server things or a Drupal thing. I cannot login into Drupal with any user. If I try and login the site does nothing but reload. It does not even give an error message. I got this error message once " "*PDOException*: SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in *lock_may_be_available()* (line *167* of*/opt/ee/hub.ee.com/includes/lock.inc<http://hub.ellerslie.com/includes/lock.inc> *)." I have emptied the sessions table and everything looks good. Any help is appreciated. Thanks, Steve -- Steve Kessler Owner and Lead Consultant Denver DataMan, LLC 303-587-4428